Auf Wiedersehen Mr. Spock

Fatal error: Uncaught TypeError: Argument 1 passed to Modules\User\Mappers\User::getUserById() must be of the type int, null given, called in /var/www/vhosts/sg-elite.de/httpdocs/application/modules/shoutbox/boxes/Shoutbox.php on line 28 and defined in /var/www/vhosts/sg-elite.de/httpdocs/application/modules/user/mappers/User.php:24 Stack trace: #0 /var/www/vhosts/sg-elite.de/httpdocs/application/modules/shoutbox/boxes/Shoutbox.php(28): Modules\User\Mappers\User->getUserById() #1 /var/www/vhosts/sg-elite.de/httpdocs/application/libraries/Ilch/Layout/Helper/Menu/Model.php(356): Modules\Shoutbox\Boxes\Shoutbox->render() #2 /var/www/vhosts/sg-elite.de/httpdocs/application/libraries/Ilch/Layout/Helper/Menu/Model.php(170): Ilch\Layout\Helper\Menu\Model->loadBoxFromModule() #3 /var/www/vhosts/sg-elite.de/httpdocs/application/libraries/Ilch/Layout/Helper/GetMenu.php(62): Ilch\Layout\Helper\Menu\Model->getItems() #4 [internal function]: Ilch\Layout\Helper\GetMenu->getMenu() #5 /var/www/vhosts/sg-elite.de/httpdocs/application/libr in /var/www/vhosts/sg-elite.de/httpdocs/application/modules/user/mappers/User.php on line 24